Oxygen Sensor Replacement Estimate for Mercedes-Benz S400

Mercedes-Benz S400 Oxygen Sensor Replacement costs $240 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$184 to $309
Labor: $70 -$80
Parts: $114 -$229
Average Dealer price
$321 to 551
Average Shop price
$226 to 370
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CarServiceYourMechanic PriceShop/Dealer Price
2012 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$192.97Shop/Dealer Price$249.13 - $360.42
2011 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$312.92Shop/Dealer Price$399.18 - $600.51
2012 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$312.92Shop/Dealer Price$399.10 - $600.37
2010 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Front/Upper/Upstream ReplacementYourMechanic Price$299.12Shop/Dealer Price$381.89 - $572.85
2011 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$192.97Shop/Dealer Price$249.15 - $360.45
2010 Mercedes-Benz S400V6-3.5L HybridService typeOxygen Sensor - Rear/Lower/Downstream ReplacementYourMechanic Price$192.97Shop/Dealer Price$249.12 - $360.40
Show example Mercedes-Benz S400 Oxygen Sensor Replacement prices

Parts required for a Mercedes-Benz S400 Oxygen Sensor Replacement

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212 reviews
Enrique
16 years of experience
A+ quality work, professionalism and friendliness. Enrique performed an initial inspection on my vehicle due to the temperature gauge light coming on. He arrived early and upon completion of the inspection provided me with very detailed information regarding the issue reported. I scheduled an appointment to perform the recommended work and let me just say Enrique is a jewel. Again, he arrived early he was friendly and courteous and described everything to me in detail. As soon as he completed the job, he explained what he did, why he did not have to perform certain other recommended repairs and the information was provided in such a way, that even me as a woman who knows nothing about cars could understand. I will definitely use Enrique in the future :-)
2008 MERCEDES-BENZ C300 - COOLING/RADIATOR FAN MOTOR REPLACEMENT
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132 reviews
Alex
11 years of experience
He was very polite and knowledgeable of the work to be done. He kept me informed of the status of my parts.
2006 MERCEDES-BENZ CLS500 - CAR HEATER CONTROL VALVE REPLACEMENT
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Kevin
18 years of experience
Kevin was so professional and so knowledgable. He really knows cars and has a passion for what he does. Thank you for the amazing service, I'll keep telling everyone I know about yourmechanic.com!
2007 MERCEDES-BENZ E63 AMG - CAR IS NOT STARTING INSPECTION
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7 years of experience
Jim is a very knowledgeable guy and gave me some excellent recommendations. Will definitely book him again.
2004 MERCEDES-BENZ ML500 - OIL CHANGE
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All about Oxygen Sensor Replacement

With each new model year, manufacturers are adding more oxygen sensors to better manage engine operation. Some high performance engines have an oxygen sensor for each cylinder as well as one for the rear of each catalytic convertor. The sensors are located either underneath the hood or underneath the car. The oxygen sensors are connected (screwed) to the exhaust pipe, either in front or back of the catalytic converter. The front (upstream) sensors measure the amount of oxygen in the exhaust system. The purpose of the front oxygen sensor(s) is to measure how rich or lean the gases are as the gases exit the combustion chamber. Depending upon whether the exhaust gas is lean (high in oxygen content) or rich (low in oxygen content), the amount of fuel entering the engine is adjusted by the engine management computer to try and maintain an ideal mixture that produces the lowest emissions output from the catalytic convertor. Rear (downstream) sensors are located behind the catalytic converter. The purpose of the rear oxygen sensor(s) is to monitor the oxygen content of the exhaust gases leaving the catalytic convertor. If one or more of the oxygen sensors are faulty, your car may not pass the emissions test. If you drive your car with a faulty oxygen sensor, you may get poor gas mileage and it can damage the catalytic converter.

Oxygen Sensor Replacement Estimates for Popular Mercedes-Benz Models